Patent application number | Description | Published |
20090056798 | Thick Film Pastes For Fire Through Applications In Solar Cells - Formulations and methods of making solar cell contacts and cells therewith are disclosed. The invention provides a photovoltaic cell comprising a front contact, a back contact, and a rear contact. The back contact comprises, prior to firing, a passivating layer onto which is applied a paste, comprising aluminum, a glass component, wherein the aluminum paste comprises, aluminum, another optional metal, a glass component, and a vehicle. The back contact comprises, prior to firing, a passivating layer onto which is applied an aluminum paste, wherein the aluminum paste comprises aluminum, a glass component, and a vehicle. | 03-05-2009 |
20090101190 | Solar Cell Contacts Containing Aluminum And At Least One Of Boron, Titanium, Nickel, Tin, Silver, Gallium, Zinc, Indium And Copper - Formulations and methods of making solar cell contacts and cells therewith are disclosed. In general, the invention provides a solar cell comprising a contact made from a mixture wherein, prior to firing, the mixture comprises at least one aluminum source, at least one source of a metal including one or more of boron, titanium, nickel, tin, gallium zinc, indium, and copper, and about 0.1 to about 10 wt % of a glass component. Within the mixture, the overall content of aluminum is about 50 wt % to about 85 wt % of the mixture, and the overall combined content of boron, nickel, tin, silver, gallium, zinc, indium, copper, is about 0.05 to about 40 wt % of the mixture. | 04-23-2009 |
20090220799 | Method Of Making Multilayer Structures Using Tapes On Non-Densifying Substrates - A method of applying a ceramic coating to a substrate comprises laminating one or more layers of a green ceramic tape to a rigid substrate using a tackifying resin to adhere the tape to the substrate. Upon firing, the tackifying resin ensures near zero shrinkage of the tape in the XY plane without usage of elevated pressures or temperatures during lamination of green tape to the substrate. The thermal degradation completion temperature of the tackifying resin is lower than that of the resin binder used in the green tape. | 09-03-2009 |
20100096598 | METHOD OF MAKING SOLAR CELL CONTACTS - Formulations and methods of making solar cells are disclosed. In general, the invention presents a solar cell contact made from a mixture wherein the mixture comprises a solids portion and an organics portion, wherein the solids portion comprises from about 85 to about 99 wt % of silver, and from about 1 to about 15 wt % of a glass component wherein the glass component comprises from about 15 to about 75 mol % PbO, and from about 5 to about 50 mol % SiO | 04-22-2010 |
20100163101 | Thick Film Conductor Formulations Comprising Silver And Nickel Or Silver And Nickel Alloys And Solar Cells Made Therefrom - Formulations and methods of making solar cells and solar cell contacts are disclosed. In general, the invention presents a solar cell contact made from a mixture wherein the mixture comprises a metal portion, which, prior to firing, comprises nickel and silver. | 07-01-2010 |
20100173446 | Layered Contact Structure For Solar Cells - Formulations and methods of making semiconductor devices and solar cell contacts are disclosed. The invention provides a method of making a semiconductor device or solar cell contact including ink-jet printing onto a silicon wafer an ink composition, typically including a high solids loading (20-80 wt %) of glass fit and preferably a conductive metal such as silver. The wafer is then fired such that the glass frit fuses to form a glass, thereby forming a contact layer to silicon. | 07-08-2010 |
20110169108 | Hot-Melt Sealing Glass Compositions And Methods Of Making And Using The Same - Hot-melt sealing glass compositions that include one or more glass frits dispersed in a polymeric binder system. The polymeric binder system is a solid at room temperature, but melts at a temperature of from about 35° C. to about 90° C., thereby forming a flowable liquid dispersion that can be applied to a substrate (e.g., a cap wafer and/or a device wafer of a MEMS device) by screen printing. Hot-melt sealing glass compositions according to the invention rapidly re-solidify and adhere to the substrate after being deposited by screen printing. Thus, they do not tend to spread out as much as conventional solvent-based glass frit bonding pastes after screen printing. And, because hot-melt sealing glass compositions according to the invention are not solvent-based systems, they do not need to be force dried after deposition. | 07-14-2011 |
20110186787 | Electrically Conductive Polymeric Compositions, Contacts, Assemblies and Methods - Electrically conductive polymeric compositions adapted for use in forming electronic devices are disclosed. The compositions are thermally curable at temperatures less than about 250° C. Compositions are provided which may be solvent-free and so can be used in processing or manufacturing operations without solvent recovery concerns. The compositions utilize (i) fatty acid modified epoxy acrylate and/or methacrylate monomer(s) and/or oligomer(s), (ii) fatty acid modified polyester acrylate and/or methacrylate monomer(s) and/or oligomer(s), or combinations of (i) and (ii). Also described are electronic assemblies such as solar cells using the various compositions and related methods. | 08-04-2011 |
20120006393 | Dielectric Coating For Single Sided Back Contact Solar Cells - A dielectric coating material system for use in a single-sided back contact solar cell is disclosed. The material system serves to electrically isolate electrodes of opposite polarity types on the same side of a silicon-based solar cell, and includes titanium and phosphorus. | 01-12-2012 |
20120125428 | ALUMINUM-BORON SOLAR CELL CONTACTS - Formulations and methods of making solar cells are disclosed. In general, the invention provides a solar cell comprising a contact made from a mixture wherein, prior to firing, the mixture comprises at least one aluminum source, at least one boron source, and about 0.1 to about 10 wt % of a glass component. Within the mixture, the overall content of aluminum is about 50 wt % to about 85 wt % of the mixture, and the overall content of boron is about 0.05 to about 20 wt % of the mixture. | 05-24-2012 |
20120138142 | LEAD FREE SOLAR CELL CONTACTS - Formulations and methods of making solar cells are disclosed. In general, the invention presents a solar cell contact made from a mixture wherein the mixture comprises a solids portion and an organics portion, wherein the solids portion comprises from about 85 to about 99 wt % of a metal component, and from about 1 to about 15 wt % of a lead-free glass component. Both front contacts and back contacts arc disclosed. | 06-07-2012 |
20120174974 | Oxides And Glasses For Use With Aluminum Back Solar Cell Contacts - Solar cell contacts having good electrical performance are made by a process involving: (a) providing a silicon wafer substrate; (b) providing a paste comprising: (i) aluminum, (ii) glass frit, and (iii) a separate and distinct amount of at least one oxide, such that, together with the aluminum, the glass frit and oxide forms a paste having an exothermic reaction peak, at a temperature of at least 660° C. to less than 900° C., (c) applying the paste to the silicon wafer substrate to form a coated substrate, and (d) firing the coated substrate for a time and at a temperature sufficient to sinter the aluminum and fuse the glass frit and oxide. | 07-12-2012 |
20120178207 | Vanadium, Cobalt And Strontium Additives For Use In Aluminum Back Solar Cell Contacts - Al pastes with additives of Co, Sr, V, compounds thereof and combinations thereof improve both the physical integrity of a back contact of a silicon solar cell as well as the electrical performance of a cell with such a contact. | 07-12-2012 |
20120186647 | Organometallic And Hydrocarbon Additives For Use With Aluminum Back Solar Cell Contacts - A method of reducing bow and/or improving the electrical performance of an aluminum back contacted silicon solar cell includes applying to a silicon wafer substrate a paste including aluminum and an organometallic compound, and firing the substrate. The organometallic compound is a C | 07-26-2012 |
20120270366 | Layered Contact Structure For Solar Cells - Formulations and methods of making semiconductor devices and solar cell contacts are disclosed. The invention provides a method of making a semiconductor device or solar cell contact including ink jet printing onto a silicon wafer an ink composition, typically including a high solids loading (20-80 wt %) of glass frit and preferably a conductive metal such as silver. The wafer is then fired such that the glass frit fuses to form a glass, thereby forming a contact layer to silicon. | 10-25-2012 |
20130040422 | Thick Film Pastes For Fire Through Applications In Solar Cells - Formulations and methods of making solar cell contacts and cells therewith are disclosed. The invention provides a photovoltaic cell comprising a front contact, a back contact, and a rear contact. The back contact comprises, prior to firing, a passivating layer onto which is applied a paste, comprising aluminum, a glass component, wherein the aluminum paste comprises, aluminum, another optional metal, a glass component, and a vehicle. The back contact comprises, prior to firing, a passivating layer onto which is applied an aluminum paste, wherein the aluminum paste comprises aluminum, a glass component, and a vehicle. | 02-14-2013 |
20130062712 | Hot-Melt Sealing Glass Compositions And Devices Using The Same - Hot-melt sealing glass compositions that include one or more glass frits dispersed in a polymeric binder system. The polymeric binder system is a solid at room temperature, but melts at a temperature of from about 35° C. to about 90° C., thereby forming a flowable liquid dispersion that can be applied to a substrate (e.g., a cap wafer and/or a device wafer of a MEMS device) by screen printing. Hot-melt sealing glass compositions according to the invention rapidly re-solidify and adhere to the substrate after being deposited by screen printing. Thus, they do not tend to spread out as much as conventional solvent-based glass frit bonding pastes after screen printing. And, because hot-melt sealing glass compositions according to the invention are not solvent-based systems, they do not need to be force dried after deposition. | 03-14-2013 |
20130277624 | Solar Cell Metallizations Containing Metal Additive - Paste compositions, methods of making a paste composition, and methods of making a solar cell contact are disclosed. The paste composition can contain silver, a glass frit, a metal additive and an organic vehicle system. The metal additive is at least one selected from the group consisting of yttrium, an organo-vanadium compound, organo-antimony compound, organo-phosphorus compound, and an organo-yttrium compound. The paste can be used for making a solar cell contact. | 10-24-2013 |
20140008112 | Single Component, Low Temperature Curable Polymeric Composition And Related Method - Electrically conductive polymeric compositions curable at temperatures below 250° C. are disclosed. The compositions are particularly well suited for forming electrodes used in association with certain solar cells. | 01-09-2014 |
20140332067 | Via Fill Material For Solar Applications - The present invention is directed toward a via fill material for use in solar applications that exhibits low series resistance and high shunt resistance. The via fill material according to the invention includes silver powder, a glass frit and a vehicle. | 11-13-2014 |
20140332071 | ELECTRICALLY CONDUCTIVE POLYMERIC COMPOSITIONS, CONTACTS, ASSEMBLIES, AND METHODS - Electrically conductive polymeric compositions adapted for use in forming electronic devices are disclosed. The compositions are thermally curable at temperatures less than about 250° C. Compositions are provided which may be solvent-free and so can be used in processing or manufacturing operations without solvent recovery concerns. Core-shell conductive particles provide the conductivity of the compositions and devices contemplated herein. | 11-13-2014 |
20140373909 | Fire Through Aluminum Paste for SiNx And Better BSF Formation - Paste compositions, methods of making a paste composition, photovoltaic cells, and methods of making a photovoltaic cell contact are disclosed. The paste composition can include a conductive metal component such as aluminum, phosphate glass, phosphorus compounds such as alky! phosphate, and a vehicle. The contact can be formed on a passivation layer on a silicon wafer by applying the paste on the passivation layer and firing the paste. During firing, the metal component can fire through the passivation layer, thereby electrically contacting the silicon substrate. | 12-25-2014 |
20140373913 | SOLAR CELL METALLIZATIONS CONTAINING ORGANOZINC COMPOUND - Paste compositions, methods of making paste compositions, contacts, and methods of making contacts are disclosed. The paste compositions include a solid portion and a vehicle system. The solid portion includes a conductive metal component and a glass binder. The vehicle system includes organometallic compound containing zinc. The organometallic compounds containing zinc can be dissolved in the vehicle system and the vehicle system does not include particles that contain zinc. The paste compositions can be used to form contacts in solar cells or other related components. | 12-25-2014 |
20150020881 | DIELECTRIC COATING FOR SINGLE SIDED BACK CONTACT SOLAR CELLS - A dielectric coating material system for use in a single-sided back contact solar cell is disclosed. The material system serves to electrically isolate electrodes of opposite polarity types on the same side of a silicon-based solar call, and includes titanium and phosphorus. | 01-22-2015 |
20150027524 | SILVER SOLAR CELL CONTACTS - Solar cell conductor formulations made are from two silver powders having different particle size distributions, an aluminum powder, and two frit glass compositions having softening points in the range of 250-700° C. and whose softening points differ by at least 10° C. | 01-29-2015 |
20150072463 | Methods Of Printing Solar Cell Contacts - Silicon solar cells and contacts thereof are printed in at least a two stage printing process where the busbars and fingerlines may be printed separately. A reduction in silver content in busbars and fingerlines through use of the techniques of the invention have been realized, including the use of certain base metals, while maintaining low contact resistance similar to silver pastes. | 03-12-2015 |